Question

Show that the points (7,12), (-3,-12) and (14, -5) lie on a circle with centre (2,0).

Answer 1

If this were my problem, I would plot the points on a graph and see if they are all equidistant from the center. The points would mark the endpoints of the radii, they would all need to be exactly the same length.

Answer 2

Thanks i plotted on a graph that helped me a lot and then use distance formula from each of the co-ordinates to the center.